After Mahiru tells her cousin, Itsuki, that she's with child, the two of them are teleported to another world. In this world, impurities are causing issues with the "Stars." Because of this, Itsuki must have "Star Children" with the twelve "Star Maidens" to fix said impurities. Mahiru just so happens to be one of those Star Maidens.¹
Inappropriate Content
In this show there is a lot of immodesty, including cleavages and exposed thighs. Also, there is "some sexual contact"². Crunchyroll lists the anime as 16+ for "Sexual Content, Sexualized Imagery, [and] Suggestive Dialogue"³. This directly conflicts with what we are told in Scripture. For example, Paul, in 1 Timothy 2:9, commands that woman dress in "modest apparel". Would you define the nudity found in this show as modest clothing?
Polygamy
In the last episode of the show, Itsuki marries thirteen women, one his cousin, Mahiru.⁴ Throughout the show, though there is no actual coitus, the Star Children are made from one guy and twelve women. It is very much a polygamous arrangement. This anime is not abstaining from "all appearance of evil" (1 Thessalonians 5:22).
"Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband." (1 Corinthians 7:2)
The Bible says teaches that each if people are to marry, they are to have their own husband (singular) or their own wife (singular). Polygamy is not biblical. Therefore, this show violates multiple verses by making Itsuki have a "harem" of sorts.
Magic
In this anime, there is also magic.⁵ The Bible clearly tells us that witchcraft is sin (1 Samuel 15:23, Galatians 5:20). Because magic is in violation with the Lord's commands, it only makes sense that we aren't supposed to consume media depicting it either! In the Book of Acts, we read an account about people who had books about witchcraft.
"Many of them also which used curious arts brought their books together, and burned them before all men: and they counted the price of them, and found it fifty thousand pieces of silver." (Acts 19:19)
Notice, it doesn't say that they used those books to warn against witchcraft. Nor does it say that they informed others about witchcraft—it says they burned the books. Christian, don't go through your life with demonic shows which put witchcraft into your mind, burn them.
Virgin Birth Mockery
The Star Maidens are all virgins. When the "love ritual" is done, a Star Child is created. These Star Children, which will help save the world, are created by virgins. Does that not sound eerily similar to the virgin birth of Jesus Christ? It really seems to be a mockery of Christ's birth since He was not the result of some "love ritual".
Conclusion
As we can see, this is not a good show. It does not please the Lord, and as such, we ought not watch it. Shows and anime which contain sinful content are not for Christians to consume as per Psalm 101:3 and many other passages.
Sources:
1. "Conception." MyAnimeList, myanimelist.net/anime/37823/Conception. Accessed 28 Mar. 2025.
2. animefan001. "Wonderful." IMDb, 28 Mar. 2024, imdb.com/review/rw5925243.
3. Conception. Crunchyroll, crunchyroll.com/series/GR1XQ92VR/conception. Accessed 28 Mar. 2025.
4. "Conception: Please Give Birth to My Child!." IMDb, imdb.com/title/tt8403818. Accessed 28 Mar. 2025.
5. "Conception (video game)." Wikipedia, Wikimedia Foundation, 26 Mar. 2025, en.wikipedia.org/wiki/Conception_(video_game). Accessed 28 Mar. 2025.